Clock frame



FIG. 1 is a perspective view of the clock frame;

FIG. 2 is a front elevation view of the clock frame;

FIG. 3 is a top view of the clock frame;

FIG. 4 is a back elevation view of the clock frame;

FIG. 5 is a side view of the left side of the clock frame, being the same as the side view on the right side; and,

FIG. 6 is a bottom view of the clock frame.

The broken line showings of FIGS. 1 and 2 are environmental only and form no part of the claimed design. 

The ornamental design for a clock frame, as shown and described. 